Method and device for detecting mutual interference of tank safety accessories

Abstract

This invention provides a method for detecting interference between safety accessories of storage tanks, relating to the field of valve testing technology. The safety accessories include a breather valve, a nitrogen-breathing integrated valve, and a nitrogen sealing valve. The detection method involves measuring the interference between two safety accessories of different storage tanks, including steps S1 to S7. For example, step S1: the air compressor unit starts and outputs a continuous and stable pressure to the pipeline; step S2: the continuous and stable pressure is transmitted to the first filter through the first manual valve, and the compressed gas enters the first pressure storage tank through the first regulating valve; step S3: the gas in the first pressure storage tank passes through the first electric valve and the second electric valve, and enters the first flow meter; etc. The function of the device and the corresponding detection method of this invention fills the testing gap for interference of storage tank safety accessories, accurately measuring the comparative changes in flow rate and pressure, and providing a test report.

Description

Technical Field

[0001] This invention relates to the field of valve testing technology, and specifically to a method for detecting interference between safety accessories of a storage tank. Background Technology

[0002] Currently, there are many venting devices and valves used for safety in petrochemical storage tank areas, such as breather valves and nitrogen sealing valves. These valves may interfere with each other's operation, which can lead to safety problems and waste of materials in the tank area.

[0003] A breather valve is a valve that ensures the storage tank space is isolated from the atmosphere within a certain pressure range, while also allowing it to breathe when the pressure exceeds or falls below this range. Its function is to prevent damage to the storage tank due to overpressure or vacuum, and to reduce evaporation losses of the stored liquid. Nitrogen blanketing valves are mainly used at the top of the storage tank to maintain a slight positive pressure, isolate the material from external contact, reduce material volatilization and waste, and protect the tank's safety.

[0004] Currently, there is no testing and solution available on the market to address the interference problem between valves in tank venting devices. Therefore, there are areas for improvement. This invention provides a method and device for detecting interference between safety accessories of storage tanks. By monitoring changes in flow rate and pressure, it determines whether there is interference between the breather valve and the nitrogen sealing valve. Summary of the Invention

[0005] To address the shortcomings of existing technologies, one of the objectives of this invention is to propose a method for detecting interference between safety accessories of storage tanks. The specific solution is as follows:

[0006] A method for detecting interference between safety accessories of a storage tank, the safety accessories including a breather valve, a nitrogen exhalation valve, and a nitrogen sealing valve, characterized in that the detection method involves measuring two of the storage tank safety accessories to verify interference, comprising the following steps:

[0007] Step S1. The air compressor unit starts and outputs a continuous and stable pressure to the pipeline;

[0008] Step S2. After the continuous and stable pressure is transmitted to the first filter through the first manual valve, the compressed gas enters the first pressure storage tank for storage through the first regulating valve;

[0009] Step S3. The gas in the first pressure storage tank passes through the first electric valve and the second electric valve and enters the first flow meter;

[0010] Step S4. The gas from the first flow meter passes through the second regulating valve. The second regulating valve transmits the relevant data to the first PC terminal. The first PC terminal forms a digital image. The gas at the second regulating valve then passes through the tenth electric valve and the eleventh electric valve into the third pressure storage tank, and then passes through the sixth electric valve into the breathing valve / nitrogen-breathing integrated valve detection platform. The breathing valve / nitrogen-breathing integrated valve detection platform is equipped with a breathing valve or a nitrogen-breathing integrated valve.

[0011] Step S5. The continuous and stable pressure is also transmitted to the second filter through the second manual valve, and after filtration, it enters the second pressure storage tank for storage;

[0012] Step S6. The gas in the second pressure tank passes through the third regulating valve to the flow transmitter, and then through the fifth electric valve to the nitrogen sealing valve testing platform to perform various tests on the nitrogen sealing valve, and record and save the corresponding data.

[0013] Step S7. The nitrogen sealing valve detection platform connects to the breathing valve / nitrogen-breathing integrated valve detection platform via an interface. Then, the breathing valve / nitrogen-breathing integrated valve detection platform sends relevant data sequentially to the third pressure tank through the sixth electric valve. The third pressure tank is then emptied through the seventh and eighth electric valves. At the same time, the third pressure tank also transmits data to the first, second, and third pressure sensors through the ninth electric valve. The three pressure sensors then send the received pressure information to the first PC to form an effective fluctuation image, and record and save the relevant data.

[0014] Furthermore, the gas in the first pressure tank can also pass through the first electric valve and the third electric valve to enter the second flow meter, and the gas from the second flow meter then passes through the second regulating valve.

[0015] Furthermore, the gas in the first pressure tank can also pass through the first electric valve and the fourth electric valve to enter the third flow meter, and the gas from the third flow meter then passes through the second regulating valve.

[0016] Furthermore, the detection method is used to test the operation of the breathing valve and nitrogen sealing valve in the integrated breathing nitrogen valve.

[0017] Another objective of this invention is to provide a detection device for interference between safety accessories of a storage tank, the specific solution of which is as follows:

[0018] A detection device for interference between safety accessories of a storage tank, the detection device comprising an air compressor unit, wherein the air compressor unit is sequentially connected to a first manual valve, a first filter, a first regulating valve, a first pressure storage tank, a first electric valve, a second electric valve, a first flow meter, a second regulating valve, and a first PC terminal;

[0019] The air compressor unit is also connected in sequence to a second manual valve, a second filter, a second pressure tank, a third regulating valve, a flow transmitter, a fifth electric valve, a nitrogen sealing valve testing platform, a breathing valve / nitrogen exhalation integrated valve testing platform, a sixth electric valve, and a third pressure tank.

[0020] The third pressure tank is connected in sequence to the seventh electric valve and the eighth electric valve. The third pressure tank is also connected in parallel to the ninth electric valve. The ninth electric valve is connected to the first pressure sensor, the second pressure sensor, and the third pressure sensor. The first pressure sensor, the second pressure sensor, and the third pressure sensor are connected to the first PC terminal. The third pressure tank is also connected in parallel to the eleventh electric valve and the tenth electric valve. The tenth electric valve is connected to the second regulating valve.

[0021] Furthermore, a third electric valve and a second flow meter are connected in parallel between the first pressure tank and the second regulating valve.

[0022] Furthermore, a fourth electric valve and a third flow meter are connected in parallel between the first pressure tank and the second regulating valve.

[0023] Furthermore, the specifications of the first flow meter, the second flow meter, and the third flow meter are 50SCCM, 1000SCCM, and 20000SCCM, respectively.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] (1) Since the nitrogen sealing valve to be tested can be pre-installed on the nitrogen sealing valve test platform, the breathing valve or breathing valve to be tested can be pre-installed on the breathing valve / breathing nitrogen integrated valve test platform. After steps S1 to S7, the air compressor unit compresses the air. One of the compressed air paths is filtered and compressed into the first pressure storage tank. The air is adjusted to a suitable pressure by the first regulating valve, then through two electric valves and the first flow meter, and finally adjusted to a suitable parameter by the second regulating valve and displayed on the first PC terminal. This allows the staff to check the working status of the air compressor unit in real time. At the same time, the compressed air is buffered at the third pressure storage tank by the tenth electric valve and the eleventh electric valve, and then reaches the breathing valve / breathing nitrogen integrated valve test platform by the sixth electric valve. It is discharged through the breathing valve or the breathing valve in the breathing valve or breathing nitrogen integrated valve.

[0026] Another stream of compressed air is filtered and compressed into a second pressure tank. After passing through a third regulating valve to achieve a suitable pressure, it then passes through a fifth electric valve and flow transmitter before entering the nitrogen sealing valve detection platform. Finally, the compressed air is discharged through the nitrogen sealing valve. Since the interface connects the breather valve and the nitrogen sealing valve, interference between them is monitored using a flow meter and pressure sensor. When interference occurs, the pressure sensor or flow meter will show changes in the data, thus proving the existence of interference.

[0027] The apparatus and method of the present invention solve the current problem of not being able to test for interference between safety accessories of storage tanks, filling the gap in safety inspection in this regard, and can accurately measure changes in flow rate and pressure, and provide test reports. Attached Figure Description

[0028] Figure 1 This is a schematic diagram illustrating the working principle of an embodiment of the present invention.

[0029] Reference numerals: 1. Air compressor unit; 2. First manual valve; 3. First filter; 4. First regulating valve; 5. First pressure tank; 6. First electric valve; 7. Second electric valve; 8. First flow meter; 9. Second regulating valve; 10. First PC terminal; 11. Second manual valve; 12. Second filter; 13. Second pressure tank; 14. Third regulating valve; 15. Flow transmitter; 16. Fifth electric valve; 17. Nitrogen sealing valve testing platform; 18. Breathing valve / integrated nitrogen exhalation valve testing platform; 19. Sixth electric valve; 20. Third pressure tank; 21. Seventh electric valve; 22. Eighth electric valve; 23. Ninth electric valve; 24. First pressure sensor; 25. Second pressure sensor; 26. Third pressure sensor; 27. Third electric valve; 28. Second flow meter; 29. ​​Fourth electric valve; 30. Third flow meter; 31. Tenth electric valve; 32. Eleventh electric valve. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0031] In existing technology, there is a testing system for testing and calibrating breathing valves (integrated nitrogen supply and pressure regulation valves), emergency pressure relief valves, and nitrogen sealing valves. The system has the following testing functions:

[0032] 1. Opening pressure test; 2. Ventilation test; 3. Overpressure test; 4. Leakage test; 5. Interference test between valves; 6. Back pressure test.

[0033] All the above tests are completed automatically under the control of the testing system. The test data can be displayed graphically and analyzed in real time, and test conclusions and reports are provided. This testing system integrates an air compressor power system, a pressure regulation testing system, a comprehensive leakage performance testing system, an electrical system, a test record output system, and auxiliary systems in an electrical-integrated manner. All of these components together form the testing system platform.

[0034] In response to the aforementioned interference test, this invention proposes a detection device and method for detecting mutual interference of storage tank safety accessories. Regarding interference, since the emergency pressure relief valve is not related to the other valves during use, the storage tank safety accessories in this invention are the integrated breathing and nitrogen sealing valve, the breathing valve, and the nitrogen sealing valve. This invention is used to test the operation of the breathing valve and the nitrogen sealing valve in the integrated breathing and nitrogen sealing valve.

[0035] The air compressor power system includes air compressor unit 1 (AIR / N2), manual valve (MV), filter (FL), regulating valve (PCV), pressure tank (VT), electric ball valve (AV), flow meter (F), and flow transmitter 15 (FT). It should be noted that the numbers in parentheses are the English abbreviations of each structure in the attached drawings. The air compressor unit 1 is a fully automatic unit mainly composed of a centrifugal air compressor, a refrigerated dryer, and an air storage tank. This unit provides compressed air and can continuously and stably output air at a pressure level of 15 kPa, providing a positive pressure system for a full range of breather valves from DN50 to DN100. The manual valve allows for manual adjustment of the valve's opening and closing position. The filter ensures cleaner compressed gas passing through the pipeline, preventing interference with the detection accuracy of precision equipment. The regulating valve detects the pressure in the pressure storage tank to achieve real-time control of the valve opening, or transmits pressure signals and flow rates to a PC digital display for real-time digital monitoring and control. The pressure storage tank stores and maintains the pressure of the compressed air from the air compressor unit 1, ensuring a continuous and stable positive pressure output throughout the pipeline, or stores gas from the detection platform and provides a continuous and stable output pressure to downstream pipelines. The electric ball valve allows for electrical switching of the valve pipeline. The flow meter measures the flow rate. The flow transmitter 15 records and transmits specific flow parameters.

[0036] Nitrogen blanketing valve testing platform (TO GU product testing platform)

[0037] This product's testing platform boasts high precision and stability. It can perform independent single-unit testing and simultaneous online testing of any two integrated nitrogen-injection and pressure-regulating valves with diameters ranging from DN50 to DN100. The nitrogen-sealing valve can be mounted on the platform using clamps, allowing for verification of its interference properties. Therefore, in conducting interference tests according to this invention, one product testing platform can be set up for each nitrogen-sealing valve, or two nitrogen-sealing valves can each be tested on a separate product testing platform.

[0038] 2. Breathing Valve / Nitrogen Intake Integrated Valve Testing Platform (TO BV / KB Product Testing Platform)

[0039] This product's testing platform boasts high precision and stability. It can perform independent single-unit testing and simultaneous online testing of any two breathing valves (DN50-DN350 diameter, including integrated breathing valves with nitrogen injection and pressure regulation within DN50-DN100 diameter) in both diameters. The integrated breathing and nitrogen control valve can be mounted on the platform using clamps, allowing for verification of its interference properties. Therefore, in conducting interference tests for this invention, one product testing platform can be set up for each breathing valve / integrated breathing and nitrogen control valve, or two separate product testing platforms can be set up for each breathing valve / integrated breathing and nitrogen control valve.

[0040] Correspondingly, the detection device includes various structures from the aforementioned compressed air power system, and some structures are present in more than one form. Therefore, in the attached... Figure 1 In the accompanying drawings, Arabic numerals are added after the corresponding English abbreviations of each structure for distinction. Specifically, the detection device includes an air compressor unit 1, which is sequentially connected to a first manual valve 2, a first filter 3, a first regulating valve 4, a first pressure tank 5, a first electric valve 6, a second electric valve 7, a first flow meter 8, a second regulating valve 9, and a first PC terminal 10, which is a PC digital display.

[0041] The air compressor unit 1 is also connected in sequence to a second manual valve 11, a second filter 12, a second pressure tank 13, a third regulating valve 14, a flow transmitter 15, a fifth electric valve 16, a nitrogen sealing valve detection platform 17 (GU), a breathing valve / nitrogen-breathing integrated valve detection platform 18, a sixth electric valve 19, and a third pressure tank 20. The third pressure tank 20 is connected in sequence to a seventh electric valve 21 and an eighth electric valve 22. The third pressure tank 20 is also connected in parallel to a ninth electric valve 23. The ninth electric valve 23 is connected to a first pressure sensor 24, a second pressure sensor 25, and a third pressure sensor 26. The first pressure sensor 24, the second pressure sensor 25, and the third pressure sensor 26 are connected to a first PC terminal 10. The third pressure tank 20 is also connected in parallel to an eleventh electric valve 32 and a tenth electric valve 31. The tenth electric valve 31 is connected to the second regulating valve 9.

[0042] It should be noted that the first regulating valve 4 is used to detect the pressure inside the first pressure storage tank 5 to achieve real-time control of the valve opening. The second regulating valve 9 is used to send pressure signals and flow rates to the first PC terminal 10 for real-time digital monitoring and control. The first pressure storage tank 5 and the second pressure storage tank 13 are used to store and maintain the pressure of the compressed air from the air compressor unit 1 to ensure a continuous and stable positive pressure output throughout the pipeline. The third pressure storage tank 20 is used to store the gas from the detection platform and provide a continuous and stable output pressure to the downstream pipeline.

[0043] To accommodate varying flow rate requirements, a third electric valve 27 and a second flow meter 28 are connected in parallel between the first pressure tank 5 and the second regulating valve 9. A fourth electric valve 29 and a third flow meter 30 are also connected in parallel between the first pressure tank 5 and the second regulating valve 9. The specifications of the first flow meter 8, the second flow meter 28, and the third flow meter 30 are 50 SCCM, 1000 SCCM, and 20000 SCCM, respectively, and can be selected.

[0044] Therefore, in this testing device, the flow meter can be tested in three separate channels.

[0045] One lane: 50 SCCM (F11)

[0046] Second channel: 1000SCCM (F12)

[0047] Three-way: 20000SCCM (F13)

[0048] Furthermore, in this detection device, the ninth electric valve 23 can detect pressure in three ways: one is (PI 1) the first pressure sensor 24 transmits the pressure signal to the first PC terminal 10 in real time for real-time control; another is (PI 2) the second pressure sensor 25 transmits the pressure signal to the first PC terminal 10 in real time for real-time control; and the third is (PI 3) the third pressure sensor 26 transmits the pressure signal to the first PC terminal 10 in real time for real-time control.

[0049] Correspondingly, the present invention also proposes a method for detecting mutual interference of safety accessories of storage tanks. The detection method involves measuring the safety accessories of two storage tanks to verify the interference, and includes the following steps:

[0050] Step S1. Air compressor unit 1 starts up and outputs a continuous and stable pressure to the pipeline;

[0051] Step S2. After the continuous and stable pressure is transmitted to the first filter 3 through the first manual valve 2, the compressed gas enters the first pressure storage tank 5 through the first regulating valve 4 for storage.

[0052] Step S3. The gas in the first pressure storage tank 5 passes through the first electric valve 6 and the second electric valve 7 and enters the first flow meter 8;

[0053] Step S4. The gas from the first flow meter 8 passes through the second regulating valve 9, which transmits relevant data to the first PC terminal 10. The first PC terminal 10 forms a digital image, and the gas at the second regulating valve 9 passes through the tenth electric valve 31 and the eleventh electric valve 32 to enter the third pressure storage tank 20, and then through the sixth electric valve 19 to enter the breathing valve / nitrogen-breathing integrated valve detection platform 18. The breathing valve / nitrogen-breathing integrated valve detection platform 18 is equipped with a breathing valve or a nitrogen-breathing integrated valve.

[0054] Step S5. The continuous and stable pressure is also transmitted to the second filter 12 through the second manual valve 11, and after filtration, it enters the second pressure storage tank 13 for storage.

[0055] Step S6. The gas in the second pressure storage tank 13 passes through the third regulating valve 14 to the flow transmitter 15, and then enters the nitrogen sealing valve detection platform 17 through the fifth electric valve 16 to perform various tests on the nitrogen sealing valve, and record and save the corresponding data.

[0056] Step S7. The nitrogen sealing valve detection platform 17 connects to the breathing valve / nitrogen-breathing integrated valve detection platform 18 via an interface. Then, the breathing valve / nitrogen-breathing integrated valve detection platform 18 sends relevant data sequentially through the sixth electric valve 19 into the third pressure tank 20. The third pressure tank 20 is then emptied through the seventh electric valve 21 and the eighth electric valve 22. At the same time, the third pressure tank 20 also transmits the data to the first pressure sensor 24, the second pressure sensor 25, and the third pressure sensor 26 through the ninth electric valve 23. The three pressure sensors then send the received pressure information to the first PC terminal 10 to form an effective fluctuation image and record and save the relevant data.

[0057] Since the appropriate flow meter can be selected, the gas in the first pressure tank 5 can also pass through the first electric valve 6 and the third electric valve 27 to enter the second flow meter 28, and the gas from the second flow meter 28 then passes through the second regulating valve 9. The gas in the first pressure tank 5 can also pass through the first electric valve 6 and the fourth electric valve 29 to enter the third flow meter 30, and the gas from the third flow meter 30 then passes through the second regulating valve 9.

[0058] The actuation test of the integrated nitrogen exhalation valve is now complete.

[0059] The pressure sensor used in this invention has an accuracy of ±0.5%, which fully meets the requirement of a set pressure permissible error range of ±5% (API).

[0060] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for detecting interference of tank safety accessories, the tank safety accessories including a breather valve, a breather-nitrogen integrated valve, a nitrogen seal valve, characterized in that, The detection method is to detect two safety accessories of the storage tank to verify the interference, comprising the following steps: Step S1. The air compressor unit (1) is started and continuously stable pressure is output to the pipeline; Step S2. The continuously stable pressure is transmitted to the first filter (3) through the first manual valve (2), and then the compressed gas enters the first pressure storage tank (5) through the first regulating valve (4); Step S3. The gas in the first pressure storage tank (5) enters the first flowmeter (8) through the first electric valve (6) and the second electric valve (7); Step S4. The gas from the first flowmeter (8) passes through the second regulating valve (9), and the second regulating valve (9) transmits relevant data to the first PC end (10) to form a digital picture, and the gas at the second regulating valve (9) also passes through the tenth electric valve (31) and the eleventh electric valve (32) to enter the third pressure storage tank (20), and then passes through the sixth electric valve (19) to enter the breathing valve / nitrogen breathing integrated valve detection platform (18) which is equipped with a breathing valve or a nitrogen breathing integrated valve; Step S5. The continuously stable pressure is also transmitted to the second filter (12) through the second manual valve (11), and then saved in the second pressure storage tank (13) after filtration; Step S6. The gas in the second pressure storage tank (13) reaches the flow transmitter (15) through the third regulating valve (14), and enters the nitrogen seal valve detection platform (17) through the fifth electric valve (16) to detect various parameters of the nitrogen seal valve and record and save the corresponding data; Step S7. The nitrogen seal valve detection platform (17) is connected to the breathing valve / nitrogen breathing integrated valve detection platform (18) through an interface, and then the breathing valve / nitrogen breathing integrated valve detection platform (18) transmits relevant data to the third pressure storage tank (20) through the sixth electric valve (19) in sequence, and the third pressure storage tank (20) is emptied through the seventh electric valve (21) and the eighth electric valve (22), at the same time, the third pressure storage tank (20) is also transmitted to the first pressure sensor (24), the second pressure sensor (25) and the third pressure sensor (26) through the ninth electric valve (23), and the three pressure sensors send the received pressure information to the first PC end (10) to form an effective fluctuation picture, and record and save the relevant data.

2. The method of claim 1, wherein The gas in the first pressure storage tank (5) can also pass through the first electric valve (6) and the third electric valve (27) to enter the second flowmeter (28), and the gas from the second flowmeter (28) passes through the second regulating valve (9) again.

3. The method of claim 2, wherein The gas in the first pressure storage tank (5) can also pass through the first electric valve (6) and the fourth electric valve (29) to enter the third flowmeter (30), and the gas from the third flowmeter (30) passes through the second regulating valve (9) again.

4. The method of claim 3, wherein The detection method is used for testing the actuation of the breathing valve and the nitrogen seal valve in the breathing valve / nitrogen breathing integrated valve.

5. A detection device for use in a method of detecting interference between a tank safety accessory according to any one of claims 1 to 4, characterised in that, The detection device comprises an air compressor unit (1), and the air compressor unit (1) is sequentially connected with a first manual valve (2), a first filter (3), a first regulating valve (4), a first pressure storage tank (5), a first electric valve (6), a second electric valve (7), a first flowmeter (8), a second regulating valve (9) and a first PC terminal (10); The air compressor unit (1) is also sequentially connected with a second manual valve (11), a second filter (12), a second pressure storage tank (13), a third regulating valve (14), a flow transmitter (15), a fifth electric valve (16), a nitrogen seal valve detection platform (17), a breathing valve / nitrogen breathing integrated valve detection platform (18), a sixth electric valve (19) and a third pressure storage tank (20); The third pressure storage tank (20) is sequentially connected with a seventh electric valve (21) and an eighth electric valve (22), and the third pressure storage tank (20) is also connected in parallel with a ninth electric valve (23), and the ninth electric valve (23) is connected with a first pressure sensor (24), a second pressure sensor (25) and a third pressure sensor (26); the first pressure sensor (24), the second pressure sensor (25) and the third pressure sensor (26) are connected with the first PC terminal (10); the third pressure storage tank (20) is also connected in parallel with an eleventh electric valve (32) and a tenth electric valve (31), and the tenth electric valve (31) is connected with the second regulating valve (9).

6. The detection device of interference of the tank safety accessory according to claim 5, characterized in that, The first pressure storage tank (5) and the second regulating valve (9) are also connected in parallel with a third electric valve (27) and a second flowmeter (28).

7. The detection device of interference of the tank safety accessory according to claim 6, characterized in that, The first pressure storage tank (5) and the second regulating valve (9) are also connected in parallel with a fourth electric valve (29) and a third flowmeter (30).

8. The detection device of interference of the tank safety accessory according to claim 7, characterized in that, The specifications of the first flowmeter (8), the second flowmeter (28) and the third flowmeter (30) are 50 SCCM, 1000 SCCM and 20000 SCCM respectively.

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